The adjuster screw on my front mech (bit that stops the chain going too far as I've probably named it wrongly) is stuck and the head is now pretty much threaded. Any suggestions for the best way to get it moving again? There is still some cross head on it but I need to work it loose somehow. It's attached to Shimano 105 flightdeck so it will I assume be shimano of some kind.
Bike is a Giant SCR1 2008.